﻿using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1.基础.算法
{
    class 平方差
    {
        public static void GetPingfangcha()
        {
            string strA=Console.ReadLine();
            int a = Convert.ToInt32(strA);

            string strB = Console.ReadLine();
            int b = Convert.ToInt32(strB);

            int c = a * a - b * b;
            Console.WriteLine(c.ToString());


        }

    }
}
